<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>简易计算器</title>
    <script src="jquery-2.0.0.min.js"></script>
    <link rel="stylesheet" href="calculater.css">
    <script src="calculater.js"></script>
</head>
<body>
    <span>数字1: </span>
    <input type="text" id="num1" value="123">
    <div></div>
    <span>数字2: </span>
    <input type="text" id="num2">    
    <div></div><br>

    <button class="add">相加</button>
    <button class="subtraction">相减</button>
    <button class="multiply">相乘</button>
    <button class="clear">清空</button>

    <p id="result">计算结果为</p>
</body>
</html>